Crispy Grilled Shrimp (Prawns) with Lemon Butter Sauce

Lemon Garlic Butter:

• 90g / 6 tbsp butter , unsalted
• 1/4 tsp salt
• 3 tsp garlic , very finely chopped (do not use mincer, Note 1)
• 1.5 tbsp lemon juice , plus more to taste

Shrimp/Prawns:

• 500g/ 1 lb large shrimp / prawns , raw, peeled and deveined (Note 2)
• 1 tsp garlic powder
• 1 tsp smoked paprika (plain or sweet ok too)
• 1/4 tsp cayenne pepper
• 1 tbsp lemon juice (skip if using stove)
• 2 tbsp olive oil
• 1/2 tsp salt
• 1/4 tsp pepper

Serving (optional):

• 1 lemon , halved, grilled if desired
• Lemon wedges or slices
• 2 tbsp finely chopped parsley